高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (2): 265.

• 论文 • 上一篇    下一篇

纤维素基磁性聚偕胺肟树脂的研究——溴在树脂上的吸附动力学

吴锦远, 杨超雄   

  1. 中国科学院广州化学研究所, 广州, 510650
  • 收稿日期:1996-11-12 出版日期:1998-02-24 发布日期:1998-02-24
  • 通讯作者: 吴锦远,联系人:男,67岁,研究员.
  • 作者简介:吴锦远,男,67岁,研究员.
  • 基金资助:

    中国科学院广州化学研究所纤维素化学开放实验室资助课题.

Studies on Cellulose-based Magnetic Polyamidoxime Adsorbents——Adsorption Kinetics of Adsorbents for Bromine

WU Jin-Yuan, YANG Chao-Xiong   

  1. Guangzhou Institute of Chemistry, Academia Sinica, Guangzhou, 510650
  • Received:1996-11-12 Online:1998-02-24 Published:1998-02-24

摘要: 研究了酸式和碱式纤维素基磁性聚偕胺肟树脂(AMAO,BMAO)对溴的吸附行为.结果表明,吸附速度不但受控于粒内扩散,也受质量作用的影响.BMAO吸溴量与溴浓度有关,符合Freundlich和Langmuir等温吸附方程.溴在树脂上高的摩尔比吸附暗示着吸附后随即进行氧化还原反应,并可能发生连续再吸附.

关键词: 纤维素基吸附剂, 聚偕胺肟, 吸附, 溴, 氧化还原反应

Abstract: Adsorption kinetics of acidic and alkaline cellulose-based magnetic polyamidoxime adsorbents(AMAO and BMAO) for bromine was investigated. The results show that the adsorption rate is controlled by intra-particle diffusion, however, it is also affected by mass action. Under the experimental conditions, the relationship between the adsorption capacity and the concentration of bromine was found to be confirmed with Freundlich equation and Langmuir adsorption isotherm. The higher super-molar ratio adsorption suggests that the adsor ption is followed by redox reaction, but the occurrence of cycle adsorption is considerable.

Key words: Cellulose-based adsorbent, Polyamidoxime, Bromine, Adsorption, Redox reaction

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